使用 Zend 实现文件上传进度 [英] Implementing file upload progress with Zend
问题描述
我正在尝试使用 Zend 实现上传进度，但是我还没有找到任何详细的教程.一个指针会很有用.
Hi Im attempting to implement upload progress with Zend however I havent found any detailed tutorials. A pointer would be useful.
谢谢.
推荐答案
我不记得曾经看过完整详细的教程，解释如何使用 Zend Framework 获取上传进度条；但这里有一些提示，如果您已经了解有关 PHP、文件上传和 Zend 框架的一些知识，它们应该可以对您有所指导......
I don't remember having ever seen a fully-detailled tutorial explaining how to get a progress bar for uploads with Zend Framework ; but here are a few pointers, that should guide you a bit, provided you already know so stuff about PHP, file uploads, and Zend Framework...
首先，您需要安装这两个 PHP 扩展之一:
First of all, you'll need one of those two PHP extension installed :
这意味着只有当您是服务器的管理员时，您才能获得那种进度条(默认情况下通常不会安装这些扩展程序 -- 并且不在共享主机上)
Which mean you'll be able to get that kind of progress bar only if you are admin of your server (those kind of extensions are generally not installed by default -- and not on shared hosting)
然后，您必须在上传表单中使用一些特殊的隐藏"字段；关于这一点，您可以查看 配置选项APC ;尤其是与 RFC 1867 相关的那些.
Then, you have to use some special "hidden" fields in your upload form ; about that, you can take a look at the configuration options of APC ; especially those related to RFC 1867.
如果您正在使用 Zend Framework，我想您已经在使用一些 Zend_Form_Element_File 在您的表单中.它应该已经对这些字段做了必要的事情——顺便说一句，你最好检查一下.
If you are using Zend Framework, I suppose you are already using some Zend_Form_Element_File in your form. It should already do what is necessary about those fields -- you'd better check that, to be sure, btw.
现在你的表格已经OK了，你终于可以看看Zend_ProgressBar，以及文档章节描述文件上传进度
您的代码可能看起来有点像这样(引用文档):
Your code will probably look a bit like this (quoting the doc) :
$adapter = new Zend_ProgressBar_Adapter_Console();
$upload = Zend_File_Transfer_Adapter_Http::getProgress($adapter);
$upload = null;
while (!$upload['done']) {
$upload = Zend_File_Transfer_Adapter_Http:getProgress($upload);
}
而且，要定期获取该信息，您必须使用某种 Ajax 请求从网页进行一些轮询.
And, to fetch that information regularly, you'll have to do some polling from the web page, using some kind of Ajax requests.
关于uploadprogress扩展，可以看看这些文章:
About the uploadprogress extension, you can take a look at these articles :
- 上传进度表 - 常见问题和一些答案 - 它可能会给您一些提示.
- AJAX 文件上传进度和 PHP AJAX 文件上传进度表更新
- 上传 PHP 5.2 的进度表扩展
- Upload Progress Meter - Common issues and some answers -- it might give you a few pointers.
- AJAX File upload Progress and PHP AJAX File Upload Progress Meter Updates
- Upload Progress Meter extension for PHP 5.2
这些帖子并不是专门针对 Zend Framework，但可能会让您了解正在发生的事情 ;-)
Those posts are not specifically targetting Zend Framework, but might give you an idea of what is going on ;-)
顺便说一句，您可能想在本地机器上测试所有这些，这更容易开发……这意味着文件上传确实快速；这不太适合测试任何类型的进度上传指标...
BTW, you'll probably want to test all that on your local machine, which is easier to develop... And that will mean that file upload will really be fast ; which is not quite good to test any kind of progress upload indicator...
关于这一点，您可能会对减慢"本地网络接口的速度感兴趣；这些可能会有所帮助:
About that, you might be interesting in "slowing down" your local network interface ; those might help :
希望这至少有一点帮助;-)
而且，当你在做的时候:你为什么不把你的发现写成一些很好的和详细的教程?这可能对某些人有用;-)
And, while you're at it : why don't you write down your findings into some kind of nice and detailled tutorial ? That might be useful to some people ;-)
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